LiveDataPostValue() and LiveData

Multiple Choice

LiveData.postValue() and LiveData.setValue() methods have some differences. So if you have a following code executed in the main thread: liveData.postValue("a") ; liveData.setValue("b") ; What will be the correct statement?

A) The value "b" would be set at first and later the main thread would override it with the value "a".
B) The value "a" would be set at first and later the main thread would override it with the value "b".
C) The value "b" would be set at first and would not be overridden with the value "a".
D) The value "a" would be set at first and would not be overridden with the value "b".